US1754066A - Electrical fitting - Google Patents

Description

April 8, 1930. F. TEFFT 1,754,066

ELECTRICAL FITTING Original Fild Marcfi 1, 926

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Patented Apr. 8, 1932 meet arena 1 m.

nnnnnnIc rn. new, on TI1ED0,"0HI0 ELECTRICAL meme Application filed March 1, 1926, Serial Ito. 91,428. Renewedflebruary 3,1930. I

This invention relates to electric conductor fittings.

' This invention has utility when embodiedelement inay'b'e inserted into the 0 from the side of the arm '14. :The plate 4; is shown as having adjacent pening 6:

in outlet boxes or fixture stand mounting and 'f*thelopening 6, additional openings 19. Flat conductor anchoring means.

Referring to the drawings: Fig. 1 is a fragmentary view,-with parts broken away, showing an embodiment of-the' invention in a fixture mounting-plate or sup 7 m'port; r

Fig. 2 is a view of the supporting sid .the'plate' fixture of Fig. 1, showingfelments of the invention incorporated therewith; v

Fig. 3 is a View of the opposite side of the ate of Fig. 2; Fig. 4 is a secti Fig. 5 is a side elevation of the conductor clamp and anchoring sleeve -as shown in- Fig.3;. I

FFig. dis a section on the line"'Vl Vl,\

Fig.- 7 is a view of the devic'elof Fig. 5 as being brought toward: assembly position; an a '5 F ig. 8 is a view of'the device of Fig. 5 as assembled, parts being broken away.

Wall 1 is shown as having screws 2, 3, to. mount plate or wall 4 having annular fl'ange a0 5. This plate 4, centrally thereof, has opening 6 adjacentwhich and therein may be placed seat? of element S'herein shown as externally threaded for mounting electric lighting fixture 9 having electric lightbulbs 10 in sockets l1 suspended by chain 12 "from the'fixture stem or tube 9 as extending from the bell 13. Thisstud elementS upon the side v ,of the wall fl away from this. threaded por- .tion, has radially extending arm 14-as beyond a plane of one side of the seat 7, while diametrically opposite from the extent of this arm 14, this element has ledge 15 adjacent the stud side of the'wall', andfle dge. 17 as an overhang upon the same side of the wall 4 as the arm 14. Between thearm 14 and the embracing or opposing ledge portions 15, 17, on opposite sides of the sea 'tfl, this element 8 has the portion 18 thereof adjacent "-ng the seat? ofsuch dimension that this on on the line IV;' IY I I sides of the Wall 4 as theseat-T 1s thrust snu head-machine screw 20 is shown as having its bevel face 21 to engage with the sides of an "opening '19 and with the threaded portion of the screw 20 coating in opening '22 of the arm 1e for othreaded engagement. As this screw 20 is run up into position, the element wall a, dueto 'the wedge of the tapered portion21 ofthe screw 20 coactin g with the open- 8 is'thrust in the direction of the plane of the.

ing 19 for thrusting element 8 away from such opening '19 and thu'scausin'g the overhang or ledge portions 15,- 17, to ride on opposite.

1y into engagement with the-side oflthe open.- ing -6 remote from the arm 14. Thisprovides a simple anchoring device which may c be quickly assembled into holding position with a substantial anchoring action adequate for carrying electric v'fiiit11-1 eis as maybe de- I sired. f; 7 h 1,

The plated shownas having additional openings .23." Fit-ting 24igisishown as having arm 25 upon'one side of. seat 26, as an over-.'

hang, while" the opposite side of the seat 26 carries flange 27 having offset p'ortion'28 away from the arm 25. This offset portion 28 allows rocking assembly of the. tubular fitting 24 into an opening 23 so that this flange or rib 27 mayuprovide a ledge opposing ledge 29 remoteirom. the arm- 25. As this sleeve fit ting 24: is swung into assembly position with the -1plat'e4' s;o that the seat 26 is in the planement as to an outlet box or fixture support w v of themim, this element'may be shifted able to a range of situations, and in the as- This structure is one which may be simply and economically produced and assembled with a minimum of time. It is'readily adaptsembly there is no special tool requirement other than the simple form of screw driver, and the use of such tool may both quickly and effectively give rigid assembly for the fitting element as to the plate.

As herein shown the sleeve fitting element 24 is adaptable for a range of electrical conductors. Armored fitting 33 may have'its electrical conductors 34, 35, protrude therefrom and the armored portion 33 as clearing the sleeve 24, be effectively anchored therewith. To this end, this element 24 has opening 36 forclip strap 37. This clip at its inner portion is shown as having arc section'38. The outer portion of this clip 37 has slotted arm 39 through which extends screw 40 The screw 40 in coacting with the slot in the slotted portion 39 precludes accidental displacement or loss of this clip from the element 24. AIter the armored conduit or conductor 33 is inserted in the element :24, the screw 40 may be rotated against the arc portion 38 of the clip and thrust such into firmly anchoring position with the armored conductor 33.

In the event there be fabric and composi tion insulation jacket 41 for conductor pair I 42, the much smaller diameter requirement for'such conductor anchoring may be made; effective even with this same fitting element 24. The screw 40 may be operated to throw the arc portion 38into clamping engagement with the insulation 41 of theconductor pair 42. This are section 38of the clamp is preferably of sheet metal and of rigidity to resist springing away from the conductor to be locked thereby into-anchoring position.

There is accordingly provided herein not only a simple form of fitting, but one which is adaptable to a wide range of sizes of electrical conductors or electrical conductor pairs effective in a simple manner for snugly look ing such conductor into position, while additionally the fitting as a unit may be simply and readily assembled into mounting position with an outlet box or fixture support as r maybe desired.

What is claimed and it is desired to secure by United States Letters Patent is:

1. An electric fitting comprising a tubular element having near a termimisthereof a peripheral groove, said groove onia common side of the element having a wall thereof away from said terminus providing a flaring por-- tion and the opposite wall of increased overhang as an arm, and a screw through said arm coacting upon. rocking assembly of the fitting through a circular opening in a wall to have the wall about theopening embraced by said groove throughout the groove extent with major clearance of the groove at the flaring portion and arm, said screw there ting in groove locking alignment with the opening axis.

2. An electric fittingcomprising a tubular element having near a terminus-thereof a peripheral groove, vsai'd groove on a common side of the element having a wall thereof.

away from said terminus providing a flaring portion and the opposite wall of increased overhang as an arm, a screw through sa1d arm coacting upon rocking assembly of the fitting through avcircular opening in a wall to have the wall about the opening embraced by said groove throughout the groove extent with major clearance of the groove at the flaring portion and arm, said screw thereoperable toward thefiaring portion to engage the opening rim and thereby holding the fitting in groove locking alignment with the opening'axis, and adjustable means carried by the element and coacting to connect a conductor therewith.

In witness whereof I afiix my signature. FREDERICK A. TEFFT.

cent meters or CORRECTION. T

Patent No; 1754,066. J g v Granted April S, 1930, to

FREDERICK-A. I

g It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2,. after line 88,

I insert the following as claim 3:

n '3. A connection for a conduit to=an outlet box having an opening embodying a fitting comprising a tubular; element, a clip in the element interior pastwhich theconduit extends, a first screw for adjusting the clip to grip the conduit in. the element said elementhavi'ng terminally from the clip 'an endless groove having a flare portion on the side of the groove toward the clip and 'an arm extension .on the side of the groove away from the clip and opposite the flare portion, and a second screw through thearm for wedging the element groove into the opening in the outlet box in thereby rendering the two screws effective for 'adjustably anchoring the conduit detachably with the outlet box.;

I and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in; the Patent Office.

Signed and sealed this 3rd day of June, A. D. 1930.

M. .J. Moore, (Seal). Acting Commissioner, of Patents.

crnr eim'rn er o-onnrerion.

Patent No; ll,754,ii66. i 1 crime AprilS, me, to

FREDERICK-A, term: 4

It is hereby certified that error appears in the nrinted specification of the above numbered patent requiring correction as follows: Page 2,. after line 88,

' insert the following as claim 3;

. '3. A connection ior a conduit to nn outiet hox having an opening embodying a fitting comprising a tubular; element, a clip in the element interior pastwhich theconduit extends, a first screw for adjusting the clip to grip the conduit inthe elemen't,said elementhaving terminally from the clip en endless groove having a flare portion on the side of the groove toward the elip and 'an arm extension on the side of the groove away from the clip and opposite the" flare portion, and a Second screw through the arm for wedgin'g the element groove into the opening in the outlet box in thereby rendering the twoscrews effective for ndjustably anchoring the conduit detaehahly with the outlet box.;

i and that the said Letters Patent'should he read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 3rd day of June, A..D. 1930.

M. .J. Moore, (Seal) r Acting Commissioner of Patents.

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